SELECT work_unit_path, COUNT(DISTINCT CASE WHEN work_unit_failed_test_classes_count > 0 THEN build_id END) AS builds_affected, ROUND(100.0 * COUNT(DISTINCT CASE WHEN work_unit_failed_test_classes_count > 0 THEN build_id END) / COUNT(DISTINCT build_id), 2) AS fail_rate_pct FROM test_performance_summary WHERE build_start_date >= DATE '2026-05-12' AND work_unit_path IS NOT NULL GROUP BY work_unit_path HAVING COUNT(DISTINCT CASE WHEN work_unit_failed_test_classes_count > 0 THEN build_id END) > 0 AND COUNT(DISTINCT CASE WHEN work_unit_failed_test_classes_count = 0 THEN build_id END) > 0 ORDER BY builds_affected DESC LIMIT 3;